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#include <GLES2/gl2.h>
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <wayland-client.h>
#include <wayland-egl.h>
#include <wlr/render/egl.h>
#include "wlr-input-inhibitor-unstable-v1-client-protocol.h"
#include "xdg-shell-client-protocol.h"
static int width = 500, height = 300;
static int keys = 0;
static struct wl_compositor *compositor = NULL;
static struct wl_seat *seat = NULL;
static struct xdg_wm_base *wm_base = NULL;
static struct zwlr_input_inhibit_manager_v1 *input_inhibit_manager = NULL;
static struct zwlr_input_inhibitor_v1 *input_inhibitor = NULL;
struct wlr_egl *egl;
struct wl_egl_window *egl_window;
struct wlr_egl_surface *egl_surface;
static void render_frame(void) {
eglMakeCurrent(egl->display, egl_surface, egl_surface, egl->context);
glViewport(0, 0, width, height);
if (keys) {
glClearColor(1.0, 1.0, 1.0, 1.0);
} else {
glClearColor(0.8, 0.4, 1.0, 1.0);
}
glClear(GL_COLOR_BUFFER_BIT);
eglSwapBuffers(egl->display, egl_surface);
}
static void xdg_surface_handle_configure(void *data,
struct xdg_surface *xdg_surface, uint32_t serial) {
xdg_surface_ack_configure(xdg_surface, serial);
wl_egl_window_resize(egl_window, width, height, 0, 0);
render_frame();
}
static const struct xdg_surface_listener xdg_surface_listener = {
.configure = xdg_surface_handle_configure,
};
static void xdg_toplevel_handle_configure(void *data,
struct xdg_toplevel *xdg_toplevel, int32_t w, int32_t h,
struct wl_array *states) {
width = w;
height = h;
}
static void xdg_toplevel_handle_close(void *data,
struct xdg_toplevel *xdg_toplevel) {
exit(0);
}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
.configure = xdg_toplevel_handle_configure,
.close = xdg_toplevel_handle_close,
};
static void wl_keyboard_keymap(void *data, struct wl_keyboard *wl_keyboard,
uint32_t format, int32_t fd, uint32_t size) {
}
static void wl_keyboard_enter(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface, struct wl_array *keys) {
}
static void wl_keyboard_leave(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface) {
}
static void wl_keyboard_modifiers(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
uint32_t mods_locked, uint32_t group) {
}
static void wl_keyboard_repeat_info(void *data, struct wl_keyboard *wl_keyboard,
int32_t rate, int32_t delay) {
}
static void wl_keyboard_key(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, uint32_t time, uint32_t key, uint32_t state) {
if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
++keys;
} else {
--keys;
}
render_frame();
}
static struct wl_keyboard_listener keyboard_listener = {
.keymap = wl_keyboard_keymap,
.enter = wl_keyboard_enter,
.leave = wl_keyboard_leave,
.key = wl_keyboard_key,
.modifiers = wl_keyboard_modifiers,
.repeat_info = wl_keyboard_repeat_info,
};
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps) {
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD)) {
struct wl_keyboard *keyboard = wl_seat_get_keyboard(wl_seat);
wl_keyboard_add_listener(keyboard, &keyboard_listener, NULL);
}
}
static void seat_handle_name(void *data, struct wl_seat *wl_seat,
const char *name) {
// Who cares
}
const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = seat_handle_name,
};
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
if (strcmp(interface, wl_compositor_interface.name) == 0) {
compositor = wl_registry_bind(registry, name,
&wl_compositor_interface, 1);
} else if (strcmp(interface, xdg_wm_base_interface.name) == 0) {
wm_base = wl_registry_bind(registry, name, &xdg_wm_base_interface, 1);
} else if (strcmp(interface, zwlr_input_inhibit_manager_v1_interface.name) == 0) {
input_inhibit_manager = wl_registry_bind(registry, name,
&zwlr_input_inhibit_manager_v1_interface, 1);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
seat = wl_registry_bind(registry, name, &wl_seat_interface, version);
wl_seat_add_listener(seat, &seat_listener, seat);
}
}
static void handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name) {
// who cares
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = handle_global_remove,
};
int main(int argc, char **argv) {
struct wl_display *display = wl_display_connect(NULL);
assert(display);
struct wl_registry *registry = wl_display_get_registry(display);
assert(registry);
wl_registry_add_listener(registry, ®istry_listener, NULL);
wl_display_roundtrip(display);
assert(compositor && seat && wm_base && input_inhibit_manager);
input_inhibitor = zwlr_input_inhibit_manager_v1_get_inhibitor(
input_inhibit_manager);
assert(input_inhibitor);
EGLint attribs[] = { EGL_NONE };
egl = wlr_egl_create(EGL_PLATFORM_WAYLAND_EXT, display, attribs);
struct wl_surface *surface = wl_compositor_create_surface(compositor);
assert(surface);
struct xdg_surface *xdg_surface =
xdg_wm_base_get_xdg_surface(wm_base, surface);
assert(xdg_surface);
struct xdg_toplevel *xdg_toplevel = xdg_surface_get_toplevel(xdg_surface);
assert(xdg_toplevel);
xdg_surface_add_listener(xdg_surface, &xdg_surface_listener, NULL);
xdg_toplevel_add_listener(xdg_toplevel, &xdg_toplevel_listener, NULL);
wl_surface_commit(surface);
egl_window = wl_egl_window_create(surface, width, height);
egl_surface = wlr_egl_create_surface(egl, egl_window);
wl_display_roundtrip(display);
render_frame();
while (wl_display_dispatch(display) != -1) {
// This space intentionally left blank
}
return 0;
}
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